[Bug 1048973] Re: udev does not export virtioserial ports in /dev

[Neil Wilson]

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https://bugs.launchpad.net/bugs/1048973

Title:
  udev does not export virtioserial ports in /dev

Status in “udev” package in Ubuntu:
  New

Bug description:
  Under libvirt you can specify special dedicated serial channels that
  link the Host to the Guest OS.

  e.g.

  <channel type='dev'>
    <source path='/dev/urandom'/>
    <target type='virtio'/>
  </channel>

  On a Redhat derivative distribution this would show up in /dev as
  /dev/vport0p1 (with an associated link name if one was specified).

  On Ubuntu they don't appear at all.

  lspci does show that the controller exists:

  
  00:07.0 Communication controller: Red Hat, Inc Virtio console

  
  And the kernel appears to enumerate the device. 

  But no devices are created in the filesystem on Ubuntu.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: udev 175-0ubuntu10
  ProcVersionSignature: Ubuntu 3.5.0-14.15-generic 3.5.3
  Uname: Linux 3.5.0-14-generic x86_64
  ApportVersion: 2.5.1-0ubuntu7
  Architecture: amd64
  CurrentDmesg:
   
  Date: Tue Sep 11 07:17:57 2012
  Lsusb:
   Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd 
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Red Hat KVM
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-14-generic root=UUID=4326d9c2-b06d-4e3d-8103-d1d2e60f2286 ro quiet
  SourcePackage: udev
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/01/2007
  dmi.bios.vendor: Seabios
  dmi.bios.version: 0.5.1
  dmi.chassis.type: 1
  dmi.chassis.vendor: Red Hat
  dmi.modalias: dmi:bvnSeabios:bvr0.5.1:bd01/01/2007:svnRedHat:pnKVM:pvrRHEL6.2.0PC:cvnRedHat:ct1:cvr:
  dmi.product.name: KVM
  dmi.product.version: RHEL 6.2.0 PC
  dmi.sys.vendor: Red Hat

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